package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.BusException;
import com.atguigu.lease.common.jwtutil.JwtUtil;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.mapper.SystemUserMapper;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private StringRedisTemplate  stringRedisTemplate;
    @Autowired
    private SystemUserMapper systemUserMapper;
    @Override
    public CaptchaVo getCaptcha() {
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 5);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);

        String code = specCaptcha.text().toLowerCase();
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();
        String image = specCaptcha.toBase64();
        stringRedisTemplate.opsForValue().set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);

        return new CaptchaVo(image, key);
    }

    @Override
    public String login(LoginVo loginVo) {

        // 验证用户名密码
        SystemUser systemUser = systemUserMapper.selectOneByUsername(loginVo.getUsername());
        if (systemUser == null){
            throw new BusException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        if (systemUser.getStatus() != BaseStatus.ENABLE){
            throw new BusException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }
        if (!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))){
            throw new BusException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }






        if (!StringUtils.hasText(loginVo.getCaptchaCode())){
            throw new BusException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }

        String Code = stringRedisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (Code == null){
            throw new BusException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        if (!Code.equals(loginVo.getCaptchaCode().toLowerCase())){
            throw new BusException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }

        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());



        return token;
    }
}
